Data as of Nov 3, 2026

57.72.0.0/18

No anonymizer space · no proxy exits in 30 days

ORANGE BUSINESS SERVICES U.S. Inc. · space held by Orange Business Communications Technology Limited

Announcement

this exact prefix

RPKI valid

Announced by

AS51964

Type

Internet provider

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder	RPKI
57.72.0.0/17 since May 2013	AS51964	Internet provider		Orange Business Communications Technology Limited
57.72.0.0/15 since May 2013	AS51964	Internet provider	1	Orange Business Communications Technology Limited

More specific

Announcements inside

Prefix	Origin	Type	Holder
57.72.38.0/24 since Nov 2018	AS51964	Internet provider	Orange Business Communications Technology Limited
57.72.40.0/24 since Apr 2014	AS51964	Internet provider	Orange Business Communications Technology Limited
57.72.49.0/24 since Jul 2025	AS4862	Internet provider	Orange Business Communications Technology Limited

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
57.72.0.0 - 57.74.255.255	196,608	OBS_SITA-INTERNET	Orange Business Communications Technology Limited (ORG-ENSI1-RIPE) · IE	LEGACY	Feb 4, 2020	[email protected]
└ 57.72.0.0/18	16,384	OBS-INTERNET	Orange Business Services-Internet services - HK aggregate	LEGACY	Jul 3, 2020	[email protected] via OBS_SITA-INTERNET

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Registry

Holder

Organization: Orange Business Communications Technology Limited
Handle: ORG-ENSI1-RIPE
Range: 57.72.0.0 - 57.74.255.255
Registration type: LEGACY
Record created: Feb 4, 2020
Legacy: yes

Origin network

AS51964

Name: ORANGE BUSINESS SERVICES U.S. Inc.
Type: Internet provider
Registered: Dec 7, 2010
Domain: orange.com
Industry: Computer and Information Technology
Spamhaus ASN-DROP: not listed

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
57.72.0.0/15	AS4862	/32	RIPE	Another network
57.72.0.0/15	AS51964	/32	RIPE	RPKI valid

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS51964	RADB	HK customers	MAINT-AS5583	Nov 13, 2023
AS51964	RIPE	HK aggregate	OBS2016-MNT	Dec 10, 2020

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
57.72.0.0/24	AS4862	RADB	Route leaking	MAINT-AS5583	Nov 13, 2023
57.72.8.0/24	AS4862	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Nov 22, 2009
57.72.10.0/24	AS4862	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Nov 22, 2009
57.72.11.0/24	AS4862	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Nov 22, 2009
57.72.13.0/24	AS4862	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Nov 22, 2009
57.72.14.0/24	AS4862	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Nov 22, 2009
57.72.23.0/24	AS4862	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Jun 28, 2011
57.72.25.0/24	AS4862	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Jun 28, 2011
57.72.27.0/24	AS51964	RADB	Route leaking	MAINT-AS5583	Nov 13, 2023
57.72.30.0/24	AS51964	RADB	Route leaking	MAINT-AS5583	Nov 13, 2023
57.72.30.0/24	AS4862	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Jun 28, 2011

57.72.0.0/18

Announcements

Covering announcements

Announcements inside

Registrations in this block

Network & registry

Holder

AS51964

Covering aggregate above, the prefix's own history below

Routing history

Route origin authorizations

Route objects on the exact prefix

Route objects inside

Registration for this announcement

Abuse contact